Pyroligneous acid
WordNet
noun
(1) A red-brown liquid formed in distillation of wood which contains acetic acid, methanol, acetone, wood oils, and tars
WiktionaryText
Noun
pyroligneous acid
- a dark liquid, produced by the destructive distillation of wood, containing acetic acid, methanol, oils and tars; once used as a commercial source of acetic acid